def DeleteToDo():
    print ("Which Item Do You Want To Delete?")
    DeleteItem = raw_input(">") #select a line number to delete
    print ("Are You Sure You Want To Delete Number" + DeleteItem + "(y/n)")
    DeleteItem=int(DeleteItem) 
    VerifyDelete = str.lower(raw_input(">"))
    if VerifyDelete == "y":
        FILE = open('data.txt',"r") #open the file (tried w+ as well, entire file is deleted)
        lines=[x.strip() for x in FILE if int(x[:x.index('.')])!=DeleteItem] #read all the lines first except the line which matches the line number to be deleted
        FILE.close()
        FILE = open('data.txt',"w")#open the file again
        for x in lines:FILE.write(x+'\n')    #write the data to the file

    else:
        print ("Nothing Deleted")
DeleteToDo()